A shown in figure "B" of the illustrated propulsion motor variable speed drive, what statement is true concerning the PWM voltage output? See illustration EL-0140.

Question

Accepted Answer

the voltage has a constant magnitude, but varies in pulse width and polarity

Answer

the voltage has a constant magnitude and polarity, but varies in pulse width

Answer

the voltage has a constant magnitude and pulse width, but varies in polarity

Answer

the voltage has a constant pulse width and polarity, but varies in magnitude

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